Home / 5,124.60-7,678.80-4,298.40

Finding the Fourth Proportional to 5,124.60, 7,678.80 and 4,298.40

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Solution

The fourth proportional to 5,124.60, 7,678.80 and 4,298.40 is: 6,440.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.60 : 7,678.80 = 4,298.40 : x
  2. Step 2: Convert to fraction form
    5,124.60/7,678.80 = 4,298.40/x
  3. Step 3: Cross multiply
    5,124.60x = 7,678.80 × 4,298.40
  4. Step 4: Simplify right side
    5,124.60x = 33,006,553.92
  5. Step 5: Solve for x
    x = 33,006,553.92/5,124.60
  6. Step 6: Final answer
    x = 6,440.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.